SEARCH KEYWORD -- arguments

In PHP, we can define our own functions which can accept optional number of arguments. In this kind of functions, the optional argument should be set with default value.Fox example, the next code example will illustrate this:<?php function func($name,$type=NULL) { echo "$name $type"; } func("Hello"); echo "<br />"; func("Hello","world"); echo "<br />";?>Here $type is an optional argument. It must be set with a default value either NULL or some other value. Quite simple....

Lisp programmers should stop reading right now because they'll
likely suffer severe injury of the jaw muscles as they laugh themselves
silly at how hard it is to do some things in C.
The C language has a pre-processor (typically called cpp) that is both infuriating and powerful.
How powerful is usually best described as 'just too little' and it has happened more than once that I found myself almost - but not quite - able to do what I wanted to do.
The frustration can run very deep at ti...

A few months ago Yahoo started to prohibit employees working from home. This controversial decision attracts many arguments about work from home. Previously we published one article Silicon Valley engineers have something to say about work from home. Now the key person behind this prohibition expresses her opinion about this.
Yahoo CEO Marissa Mayer responded to the policy of prohibiting working from home the first time on Thursday. She said that when people were working together they could be m...

PHP's meaning of overloading is different than Java's. In PHP, overloading means that you are able to add object members at runtime, by implementing some of the __magic methods, like __get, __set, __call, __callStatic. You load objects with new members.
Overloading in PHP provides means to
dynamically "create" properties and
methods. These dynamic entities are
processed via magic methods one can
establish in a class for various
action types.
Some example:class Foo{ p...

1. Introduction
In addition to normal mode, ECMAScript 5 includes the other mode : strict mode. It means it will make JavaScript codes execute in a more strict environment.
The purposes to have strict mode are:
Remove some unreasonable and parts of JavaScript syntax. Reduce some of the quirk behaviors.
Remove some insecure parts of code execution. Make the execution environment more secure
Improve interpret efficiency and increase the execution speed
Build foundation for future JavaScript versi...

In JavaScript, showModalDialog() method creates a simple modal
dialog box which is a simple html page but when a modal dialog opens,
user can't switch to another page until it closes the modal dialog box.
Syntax:
window.showModalDialog( url, arguments, feature options);
Where url is the URL of page which is to be opened in modal window and arguments
are those arguments which we are passing to the modal window and feature
options
are the attributes set for the modal windo...

In JavaScript world, it's frequently seen object clone. Normally when creating a clone of an object, it's only the reference being cloned but not all contents. In some scenarioes, it's desired to clone all the content instead of just the reference such that any change made to the cloned object will not change the original object.
Differences between shallow clone and deep clone can be as simple as:
Shallow clone : Only the object reference is cloned but not the content
Deep clone : Clone all co...

So what are multimethods? I'll give you my own definition, as I've
come to understand them: a function that has multiple versions,
distinguished by the type of the arguments. (Some people go beyond this
and also allow versions distinguished by the value of the arguments; I'm not addressing this here.)
As a very simple example, let's suppose we have a function that
we want to define for two ints, two floats, or two strings. Of course,
we could define it as follows:
def foo(a, b):
if...

This post is for programmers who like C or for one reason or another
can't use anything else but C in one of their projects. The advantages
of having default arguments is not something that needs convincing. It's
just very nice and convenient to have them. C++ offers the ability to
define them but C under the C99 standard has no way to allow it. In this
post I will detail two ways I know of implementing default arguments in
C. If a reader happens to know additional ways please share in ...

IntroductionHash tables are a permutation of associative arrays (i.e. name => value pairs). If you use PHP, then you are very familiar with this type of data structure already since all PHP arrays are associative.The Javascript language implements very loose and somewhat limited support for associative arrays. Any JavaScript array can use other objects as keys, making it a hash, but there exists no formal constructor for initializing them and it is more or less unweildy to work with. A short ...